/Engine/Source/Editor/UnrealEd/Public/Subsystems/AssetEditorSubsystem.h
Notify the asset editor manager that an asset editor is done editing an asset
void NotifyAssetClosed ( [UObject](API\Runtime\CoreUObject\UObject\UObject) * Asset, [IAssetEditorInstance](API\Editor\UnrealEd\Subsystems\IAssetEditorInstance) * Instance )